libdrm September 2012 Developer David Herrmann dh.herrmann@googlemail.com drmHandleEvent 3 drmHandleEvent read and process pending DRM events #include <xf86drm.h> int drmHandleEvent int fd drmEventContextPtr evctx drmHandleEvent processes outstanding DRM events on the DRM file-descriptor passed as fd. This function should be called after the DRM file-descriptor has polled readable; it will read the events and use the passed-in evctx structure to call function pointers with the parameters noted below: typedef struct _drmEventContext { int version; void (*vblank_handler) (int fd, unsigned int sequence, unsigned int tv_sec, unsigned int tv_usec, void *user_data) void (*page_flip_handler) (int fd, unsigned int sequence, unsigned int tv_sec, unsigned int tv_usec, void *user_data) } drmEventContext, *drmEventContextPtr; drmHandleEvent returns 0 on success, or if there is no data to read from the file-descriptor. Returns -1 if the read on the file-descriptor fails or returns less than a full event record. Bugs in this function should be reported to https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=libdrm under the "DRI" product, component "libdrm" drm7, drm-kms7, drmModePageFlip3, drmWaitVBlank3